Causality Constraints on Massive Gravity
High Energy Physics - Theory
2017-10-11 v3 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
The de Rham-Gabadadze-Tolley massive gravity admits pp-wave backgrounds on which linear fluctuations are shown to undergo time advances for all values of the parameters. The perturbations may propagate in closed time-like curves unless the parameter space is constrained to a line. These classical phenomena take place well within the theory's validity regime.
Cite
@article{arxiv.1610.02033,
title = {Causality Constraints on Massive Gravity},
author = {Xián O. Camanho and Gustavo Lucena Gómez and Rakibur Rahman},
journal= {arXiv preprint arXiv:1610.02033},
year = {2017}
}
Comments
6 pages, 4 figures; to appear in PRD